Brick



' W. GRIFFITHS BRICK Original Filed Jan. 5, 1923 ll l l 4/ IwzvemZTO 7 Patented Jan. 13, 1925.

a WALTER GRIFFITHS OF CITY ISLAND, NEW- YORK.

BRICK.

Original application filed. January 5, 1923, Serial No. 610,885. Divided and this application filed August 29, 1923. Serial No. 659,953.

To all whom it may concern Be it known that I, WALTER GRIFFITHS, a citizen of the United States, formerly of Riverhead, State'of New York, and now residing at City Island, in the city of New York and State of New York, have invented certain new and useful Improvements in Bricks, of which the following is a specification.

This application is a division and continuation of my application filed January 5th, 1923, Serial No. 610,885.

This invention generally relates to hollow brick whether the same be fire-brick or other kinds of brick, an object thereof being to provide hollow brick which are especially adapted for use in connection with furnaces, such as steam-boiler furnaces. Another object of the invention is to provide brick particularly adapted for use in the inner walls of furnaces, each brick being so' constructed as to withstand the great direct heat, and also being constructed so as to cooperate with the other bricks of the inner wall and provide a wall which will properly ,withstand the great heat.

These being among the general objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawings illustrating two embodiments of the invention, and in which Fig. 1 is a perspective view of the pre-. ferred form of fire-brick;

Fig. 2' is a plan thereof;

Fig. 3 is an end elevation; and

Fig. 4 is a section of a fragmentary portion of a wall comprising bricks such as shown in Fig. 1.

Referring to Figs. 1, 2 and 3. the hollow fire-brick 39 is composed of an inner brickbody 40 and an outer brick-body 41, the body 40 being preferably considerably thicker than the body 41, for the reason that in a wall the body 40 is the part of the brick exposed to the fire or direct heat. Firebrick 39 also ha parallel connecting mem-.

bers 42 at the four corresponding corners of the thick body 40 and the thinner body 41, all the parts being preferably made integral so that each brick constitutes a molded unit comprising the said parts. Preferably in this manner each brick 39 is provided with side apertures 43 and end apertures 44 which seen therefrom how lead into the space between the bodies 40 and 41.

Each brick 39 is furthermore preferably provided with alongitudinal side and end groove 45 and with a longitudinal side and. end rib 46. Each brick 39 also preferably has at the four sides of the inner face of the thinner body 41 chamfers 47.

In Fig. 4 a portion of a fire wall composed of brick'such as 39 is shown, and it will be bricks such as 39 may be built up and cemented together. The exact construction of Walt preferred is more fully described in acompanion application filed on even date herewith, but it may be stated in brief that the ribs 46 of each brick are received in the channels or grooves 45 of the adjoining brick, and that the bricks are preferably cemented together as by bonds 50 of fire-clay. The outer bodies 41 of the fire-bricks, inasmuch as they have the chamfers 47, Wlll, when laid in courses, provide longitudinal and transverse grooves on theouter surface of the wall of fire-brick. Fireclay bonds are applied to the outer surfaces of said wall so as to enter the criss-cross grooves therein and to this outer surface are applied suitable. facing members 48, 49,

which are provided with ribs which enter the grooves formed by the chamfers.

It will be noted from Fig. 4 that substantially the same construction of fire-brick as described is used in bond-brick 40. These bond-brick maybe laid, say, in every third course, and the inner portions are extended considerably further than the portions on bodies 41, so that bodies 41 then become the larger portions of the brick and extend into adjacent masonry if there be such. The inner extensions of the bond-brick 40 are transversely grooved so as to receive specially shaped facing members 48*, which with fire-clay, preferably form the joints at the meeting surfaces of the ordinary firebrick 39 and the bond--brick 40 It is obvious that this invention is susceptible of more or less modification and would still be within the appended claims.

What I claim as new is:

1. A brick, composed of two parallel brick bodies, and four parallel corner-connecting members therefor, spacing' the bodies to provide an air space between them, the brick having apertures at the sides and ends, located between the connecting members a between the bodies,

communicating with each other through, said air space. t a

2. A brick, composed of two spaced bodies, and four parallel corner connecting members ing side and end ribs and grooves and the other having chamfers along its edges, intermediate of which ribs and grooves and the chamfers communicating through pas- 19 sages extend between the connecting members.

one of the bodies hay-- 3. A brick, composed of two spaced bodies and corner-connecting members between the bodies providing side and end apertures leading into the space between the bodies, one of said bodies being extended considerably beyond said space to provide a bondbrick, and the extension provided with transverse grooves for receiving filling pieces which may close the joint between said bondbrick and a brick of ordinary size.

WALTER GRIFFITHS. 

